The Validation of Musculoskeletal Model During Isokinetic Exercise at Knee Joint: An Experimental and Simulation Study.
- Author:
Tae Soo BAE
1
;
Seung Jae KANG
;
Kyung Joo CHOI
;
Shin Ki KIM
;
Wook Jae RYU
;
Mi Ryeong JIN
;
Mu Seong MUN
Author Information
1. Korea Orthopedics & Rehabilitation Engineering Center. bmebae@iris.korec.re.kr
- Publication Type:Comparative Study ; Original Article
- Keywords:
Musculoskeletal model;
Isokinetic exercise;
Modified hill-type model
- MeSH:
Gait;
Humans;
Knee Joint*;
Knee*;
Lower Extremity;
Muscles;
Torque
- From:Journal of Korean Orthopaedic Research Society
2003;6(2):186-195
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: This study validated the musculoskeletal model of the human lower extremity by comparative study between calculated muscle parameters through simulation using modified hill-type model and measured muscle parameters through isokinetic exercise. The relationship between muscle forces and moments participated in motion was quantified from the results of simulation. MATERIALS AND METHODS: For simulation of isokinetic motion, a three-dimensional anatomical knee model was constructed using gait analysis. The EMG-force model was used to determine muscle activation level exciting muscles. The modified Hill-type model was used to calculate individual muscle force and moment in dynamic analysis. This method was validated by comparing analytical data with experimental data. RESULTS: The results showed that there was a significant correlation between calculated torques from simulation and measured torque from isokinetic motion experiments (R=0.97). We also found that muscle forces and moments during knee flexion and extension have nonlinearly proportional or inversely proportional relationship, since lower extremity muscles were simultaneously involved in flexion/extension motion and inner/outer rotation. CONCLUSION: We concluded that the simulation by using musculoskeletal model may be a useful mean to predict and recover musculoskeletal-related diseases, and analyze complicated experiment such as clash condition.
